Data Link Connector

Fault diagnosis, data link connector

Fault symptom
No Intelligent Saab Tester (ISAT) scan tool communication.

Action
1 Check the ISAT scan tool connection Connect the ISAT scan tool
The ISAT scan tool display should light
If the display lights, proceed to point 5.
If not, proceed to point 2.
2 Check fuse 23.
3 Check +30 supply to the data link connector
Connect the test lamp between pin 9 in the data link connector and a safe grounding point.
The test lamp should light if there is 30.
If the lamp lights, proceed to point 4. If not, check the cable assembly between pin 9 and fuse 23 and if necessary take action on this. If there is no fault in the cable assembly, continue fault diagnosis in Service Manual 3:2 Electrical system, "Power supply +30". Electrical Diagrams
4 Check the ground connection in the data link connector
Connect the test lamp between pins 9 and 10 in the data link connector.
The test lamp should light if there is a ground connection.
If the lamp lights, check the ISAT scan tool.
If not, take action on the cable assembly between pin 10 and grounding point G24.







5 Check the Intelligent Saab Tester (ISAT) scan tool contact with the theft alarm
Note that the theft alarm must not he armed.
Select "ANTI.THEFT ALARM".
The ISAT scan tool should show the menu for the theft alarm. ISAT Scan Tool Menu Structure
If contact is made, the fault is of intermittent type.
Proceed to "Before Changing the Electronic Control Module". Before Changing the Electronic Control Module
If not, proceed to point 6.
6 Check the ISAT scan tool contact with an other system
Select another system that the car is equipped with.
The ISAT scan tool should display the menu for the system selected.
If contact is made, proceed to point 7.
If not, check the ISAT scan tool.
7 Check the cable assembly
Conduct a continuity test on the cable assembly between data link connector pin 1 and the theft alarm control module, pin 19.
The resistance should be <1 Ohm.
If the resistance is incorrect, remedy the fault in the cable assembly.
If the resistance is correct, proceed to "Before Changing the Electronic Control Module". Before Changing the Electronic Control Module